Related Manuals for Hanna Instruments HI 2550
Summary of Contents for Hanna Instruments HI 2550
- Page 1 Instruction Manual HI 2550 Multiparameter pH/ORP/°C EC/TDS/NaCl Bench Meter w w w. h a n n a i n s t . c o m...
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Page 2: Table Of Contents
W A R R A N T Y W A R R A N T Y HI 2550 is guaranteed for two years against defects in workmanship and materials when used for their intended purpose and maintained according to instructions. Electrodes and probes are guaranteed for six months. This warranty is limited to repair or replacement free of charge. -
Page 3: Preliminary Examination
GENERAL DESCRIPTION GENERAL DESCRIPTION GENERAL DESCRIPTION GENERAL DESCRIPTION The HI 2550 is a microprocessor based pH, ORP, Conductivity (EC), TDS, NaCl, and Temperature Bench Meter. Relative mV feature is also provided. pH measurements are compensated for temperature effect manually or automatically with the HI 7662 temperature probe. -
Page 4: Functional Description
F U N C T I O N A L D E S C R I P T I O N F U N C T I O N A L D E S C R I P T I O N F U N C T I O N A L D E S C R I P T I O N F U N C T I O N A L D E S C R I P T I O N F U N C T I O N A L D E S C R I P T I O N... -
Page 5: Specifications
SPECIFICATIONS SPECIFICATIONS SPECIFICATIONS SPECIFICATIONS SPECIFICATIONS – – – ± & ± & μ μ μ v i t y t i – C º ± ± μ μ μ C º ± ± ± ± ± ± ± ± μ , t i C °... - Page 6 l e R e s f ± t n i b i l o i t f f u s r e l i a b i l t a r n o i , ) 5 t s u f f u s r e t n i...
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Page 7: Operational Guide
OPERATIONAL GUIDE OPERATIONAL GUIDE OPERATIONAL GUIDE OPERATIONAL GUIDE OPERATIONAL GUIDE POWER CONNECTION POWER CONNECTION POWER CONNECTION POWER CONNECTION POWER CONNECTION Plug the 12 VDC adapter into the power supply socket. Notes: • This instrument uses non volatile memory to retain the calibration parameters and all other settings, even when unplugged. - Page 8 • The pH is displayed on the primary LCD and the temperature on the secondary LCD. • If the reading is out of range, the closest full-scale value will be displayed blinking on the primary LCD. If measurements are taken successively in different samples, it is recommended to rinse the electrode thoroughly with deionized water or tap water and then with some of the next sample to prevent cross-contamination.
- Page 9 • The instrument displays the mV reading on the primary LCD and the temperature on the secondary LCD line. • If the reading is out of range, the closest full-scale value will be displayed blinking on the primary LCD. RELATIVE mV MEASUREMENTS RELATIVE mV MEASUREMENTS RELATIVE mV MEASUREMENTS RELATIVE mV MEASUREMENTS...
- Page 10 • If LOCK key was pressed and the reading goes out of range, the full-scale value of the frozen range will be displayed blinking. The conductivity reading is affected by temperature. Three options for temperature compensation are available in conductivity measurement mode.
- Page 11 TDS MEASUREMENTS TDS MEASUREMENTS TDS MEASUREMENTS TDS MEASUREMENTS TDS MEASUREMENTS Press the ALT&MODE keys while in EC range. The instrument will switch to TDS measuring range. The TDS reading will be displayed on the primary LCD and the temperature reading on the secondary LCD. •...
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Page 12: Auto-Ranging
A U T O - R A N G I N G A U T O - R A N G I N G A U T O - R A N G I N G A U T O - R A N G I N G A U T O - R A N G I N G The EC and TDS scales are auto-ranging. -
Page 13: Ph Calibration
p p p p p H CALIBRATION H CALIBRATION H CALIBRATION H CALIBRATION H CALIBRATION Calibrate the instrument frequently, especially if high accuracy is required. The instrument should be recalibrated: • Whenever the pH electrode is replaced. • At least once a day. •... - Page 14 FIVE FIVE- - - - - POINT FIVE POINT POINT CALIBRATION CALIBRATION FIVE FIVE POINT POINT CALIBRATION CALIBRATION CALIBRATION • Submerse the pH electrode and the temperature probe approximately 3 cm (1¼”) into a buffer solution and stir gently. The temperature probe 3 cm should be close to the pH electrode.
- Page 15 • If necessary, press the ARROW keys to select a different buffer value. • The “ ” tag will blink on the LCD until the reading is stable. • When the reading is stable and close to the selected buffer, the “READY” tag will be displayed and the “CFM”...
- Page 16 ONE-POINT CALIBRATION ONE-POINT CALIBRATION ONE-POINT CALIBRATION ONE-POINT CALIBRATION ONE-POINT CALIBRATION Two SETUP selectable options are available: “Pnt” and “OFFS”. If the “Pnt” option is selected, the new calibration point overrides an existing one. The adjacent slopes will be reevaluated. If the “OFFS” option is selected, an electrode offset correction is performed. The adjacent slopes will remain unchanged.
- Page 17 • Each time a buffer is confirmed, the new calibration data replaces the old calibration data for the corresponding buffer. If current buffer has no previous data stored and the cali- bration is not full (five buffers), the current buffer is added to the existing calibration.
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Page 18: Ph Buffer Temperature Dependence
p p p p p H BUFFER TEMPERATURE H BUFFER TEMPERATURE H BUFFER TEMPERATURE H BUFFER TEMPERATURE H BUFFER TEMPERATURE D E P E N D E N C E D E P E N D E N C E D E P E N D E N C E D E P E N D E N C E D E P E N D E N C E... -
Page 19: Relative Mv Calibration
RELATIVE RELATIVE RELATIVE RELATIVE RELATIVE m m m m m V CALIBRATION V CALIBRATION V CALIBRATION V CALIBRATION V CALIBRATION • Press CAL when the instrument is in RELATIVE mV measurement mode. The “mV” and “ ” tags will be displayed. Absolute mV is displayed on the primary LCD and “AbS”... - Page 20 Select the desired value with the ARROW keys, if necessary. When the reading is stable, “READY” tag is displayed and “CFM” tag starts blinking on the LCD, asking for confirmation. READY Press CFM to confirm calibration. The instrument stores the calibration value and returns to measurement mode.
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Page 21: Conductivity Versus Temperature Chart
C O N D U C T I V I T Y V E R S U S C O N D U C T I V I T Y V E R S U S C O N D U C T I V I T Y V E R S U S C O N D U C T I V I T Y V E R S U S C O N D U C T I V I T Y V E R S U S TEMPERATURE CHART... -
Page 22: Nacl Calibration
N a C l C A L I B R A T I O N N a C l C A L I B R A T I O N N a C l C A L I B R A T I O N N a C l C A L I B R A T I O N N a C l C A L I B R A T I O N NaCl calibration is a one-point calibration at 100.0% NaCl. -
Page 23: Good Laboratory Practice (Glp)
GOOD LABORATORY PRACTICE (GLP) GOOD LABORATORY PRACTICE (GLP) GOOD LABORATORY PRACTICE (GLP) GOOD LABORATORY PRACTICE (GLP) GOOD LABORATORY PRACTICE (GLP) GLP is a set of functions that allows storage and retrieval of data regarding the maintenance and status of the electrode. All data regarding pH, Rel mV, EC and NaCl calibration is stored for the user to review when necessary. - Page 24 • The pH calibration slope (the GLP slope is the average of the calibration slopes; the percentage is referred to the ideal value of 59.16 mV/pH). • The calibration buffers in order. The first pH calibration buffer: The second pH calibration buffer: The third pH calibration buffer: The fourth pH calibration buffer: The fifth pH calibration buffer:...
- Page 25 - or the number of days until the calibration alarm will be displayed. - or if expired (7 days ago). INTV • The instrument ID. R R R R R elative mV elative mV elative mV elative mV elative mV CALIBRATION DATA CALIBRATION DATA CALIBRATION DATA CALIBRATION DATA...
- Page 26 EC CALIBRATION DATA EC CALIBRATION DATA EC CALIBRATION DATA EC CALIBRATION DATA EC CALIBRATION DATA EC calibration data is stored automatically after a successful calibration. To view the EC calibration data, press GLP when the instrument is in EC measurement mode. The instrument will display the time (hh:mm) of the last calibration.
- Page 27 • The temperature compensation mode. • The instrument ID. N N N N N aCl aCl CALIBRATION DATA CALIBRATION DATA CALIBRATION DATA CALIBRATION DATA CALIBRATION DATA NaCl calibration data is stored automatically after a successful calibration. To view the NaCl calibration data, press GLP when the instrument is in NaCl measurement mode.
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Page 28: Logging Function
• The temperature compensation mode. • The instrument ID. Notes: • If no temperature compensation is selected during calibration, the temperature coefficient is not displayed in GLP. • Press GLP at any moment and the instrument will return to measurement mode. •... - Page 29 followed by the number of free records: If there are less than 6 memory locations remaining, the record number and “Lo” message will be displayed to alert the user. If the log space is full (200 records), “FULL LOG” message will be displayed and no more data will be saved.
- Page 30 VIEW LOGGED DATA VIEW LOGGED DATA VIEW LOGGED DATA VIEW LOGGED DATA VIEW LOGGED DATA Press the ALT&RCL keys while in measurement mode to retrieve the stored information. If no data was logged for the current selected measurement range and no lots are memorized, one of the next messages will be displayed: No pH measurements records: No Relative mV and mV records:...
- Page 31 Press CFM to view record information. • If RCL was entered while in pH measurement range: In Rel mV range: In EC measurement range: In TDS measurement range: In NaCl measurement range: Use the ARROW keys to scroll through the records.
- Page 32 Note: The instrument will automatically skip log records from other measurement ranges. To view additional information press RANGE: For pH • The mV value on the primary LCD and the temperature value on the secondary LCD. • The time on the primary LCD, along with “TIME” tag and the record number on the secondary LCD.
- Page 33 The “dEL” message is displayed on the primary LCD and the selected record on the secondary LCD, along with ”LOG” tag. • The ARROW keys can be used to change the record or lot number. • Press SETUP to delete all records/lots. The display will show “dEL” in the primary LCD and “ALL”...
- Page 34 • The cell constant on the primary LCD and “CEL” message on the secondary LCD line. • The reference temperature on the primary LCD and “rEF” message on the secondary LCD. • The temperature coefficient on the primary LCD and “tc” message on the secondary LCD.
- Page 35 For NaCl Range • The conductivity and temperature reading value as described in TDS Range. • The time and date as described in pH Range. • The salinity factor on the primary LCD and “cF” message on the secondary LCD, with “LOG” and “NaCl” tags displayed. •...
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Page 36: Setup
S E T U P S E T U P S E T U P S E T U P S E T U P Setup mode allows viewing and modifying the following instrument parameters. In according with the selected range, SETUP menu allows the possibility to view and /or change specific range parameters and common parameters (for all the ranges). - Page 37 EXPIRED CALIBRATION ALARM EXPIRED CALIBRATION ALARM EXPIRED CALIBRATION ALARM EXPIRED CALIBRATION ALARM EXPIRED CALIBRATION ALARM Press CAL when the calibration time-out is displayed. Calibration time-out (“OFF” or “1” to “7” days) will start blinking. Press the ARROW keys to change the calibration time-out value. Press CFM to save the modified calibration time-out value.
- Page 38 Note: To remove a custom buffer from the calibration list enter custom buffer press CAL key then press CLR key. The “no” “cb1” or “cb2” message will be displayed and the instrument return for the SETUP parameter scroll mode. ONE-POINT CALIBRATION BEHAVIOR ONE-POINT CALIBRATION BEHAVIOR ONE-POINT CALIBRATION BEHAVIOR ONE-POINT CALIBRATION BEHAVIOR...
- Page 39 CURRENT DATE CURRENT DATE CURRENT DATE CURRENT DATE CURRENT DATE Press CAL when the current date is displayed. The year will start blinking. Press the ARROW keys to change the year. Press RANGE. The month will start blinking. Press the ARROW keys to change the month. Press RANGE.
- Page 40 I I I I I NSTRUMENT ID NSTRUMENT ID NSTRUMENT ID NSTRUMENT ID NSTRUMENT ID Press CAL when “InId” is displayed. The instrument ID (“0000“ to “9999“) will start blinking. Press the ARROW keys to change the instrument ID value. Press CFM to save the modified instrument ID value.
- Page 41 TDS FACTOR TDS FACTOR TDS FACTOR TDS FACTOR TDS FACTOR Press CAL when “tdS” is displayed. The TDS factor will start blinking. Press the ARROW keys to change the TDS factor (0.40 to 0.80). Press CFM to save the modified TDS factor. Press CAL to escape without saving.
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Page 42: Temperature Calibration (For Technical Personnel Only)
TEMPERATURE CALIBRATION TEMPERATURE CALIBRATION TEMPERATURE CALIBRATION TEMPERATURE CALIBRATION TEMPERATURE CALIBRATION ( ( ( ( ( f o r t e c h n i c a l p e r s o n n e l o n l y f o r t e c h n i c a l p e r s o n n e l o n l y f o r t e c h n i c a l p e r s o n n e l o n l y f o r t e c h n i c a l p e r s o n n e l o n l y) ) ) ) ) - Page 43 • Submerse the temperature probe (or EC probe) in the second vessel as near as possible to the calibrated thermometer. Allow a few seconds for the probe to stabilize. • Use the ARROW keys to set the reading on the secondary LCD to that of the hot water.
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Page 44: Mv Calibration (For Technical Personnel Only)
m m m m m V CALIBRATION V CALIBRATION V CALIBRATION V CALIBRATION V CALIBRATION ( ( ( ( ( f o r t e c h n i c a l p e r s o n n e l o n l y f o r t e c h n i c a l p e r s o n n e l o n l y f o r t e c h n i c a l p e r s o n n e l o n l y f o r t e c h n i c a l p e r s o n n e l o n l y) ) ) ) ) -
Page 45: Pc Interface
Make sure that your instrument is switched off and plug one connector to the instrument USB socket and the other to the USB port of your PC. Note: If you are not using Hanna Instruments HI 92000 software, please see the following instructions. - Page 46 CHRxx Change the instrument range according with the parameter value (xx): • xx=00 pH range/0.001 resolution • xx=01 pH range/0.01 resolution • xx=02 pH range/0.1 resolution • xx=03 mV range • xx=04 Relative mV range • xx=06 EC range • xx=07 TDS range •...
- Page 47 • Reading status (2 chars): R - in range, O - over range, U - under range. First character corresponds to the appropriate range reading. Second character corresponds to mV reading (if exist). • Primary reading (corresponding to the selected range) - 7 ASCII chars, including sign and decimal point.
- Page 48 • EC calibration data (if available), which contains: • the number of calibrated standards (1 char) • the offset factor, with sign and decimal point (7 chars) • the cell constant, with sign and decimal point (7 chars) • the calibration time, yymmddhhmmss (12 chars) •...
- Page 49 • Calibration alarm time out for pH range (2 chars) • SETUP information (2 chars): 8 bit hexadecimal encoding. • 0x01 - beep ON (else OFF) • 0x04 - degrees Celsius (else degrees Fahrenheit) • 0x08 - Offset calibration (else Point calibration) •...
- Page 50 GLDxxxff: Requests the records of the “xxx” lot number. The records are sent in frames of 10 records; “ff” is the frame number (01 first frame). (Example: Lot 13 has 53 records. The records will be sent in 6 frame, 5 with10 records and 1 with 3 records.) Command Parameters: xxx - Lot number (eq: for lot number 1 xxx = 001) ff - requested frame number - first frame is labeled 01...
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Page 51: Electrode Conditioning & Maintenance
E L E C T R O D E C O N D I T I O N I N G E L E C T R O D E C O N D I T I O N I N G E L E C T R O D E C O N D I T I O N I N G E L E C T R O D E C O N D I T I O N I N G E L E C T R O D E C O N D I T I O N I N G... - Page 52 For refillable electrodes: For refillable electrodes: For refillable electrodes: For refillable electrodes: For refillable electrodes: If the filling solution (electrolyte) is more than 2½ cm (1”) below the fill hole, add HI 7082 or HI 8082 3.5M KCl Electrolyte Solution for double junction or HI 7071 or HI 8071 3.5M KCl+AgCl Electrolyte Solution for single junction electrodes.
- Page 53 pH ELECTRODE CLEANING PROCEDURE ELECTRODE CLEANING PROCEDURE ELECTRODE CLEANING PROCEDURE ELECTRODE CLEANING PROCEDURE ELECTRODE CLEANING PROCEDURE • General Soak in Hanna HI 7061 or HI 8061 General Cleaning Solution for approximately ½ hour. • Protein Soak in Hanna HI 7073 or HI 8073 Protein Cleaning Solution for 15 minutes.
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Page 54: Troubleshooting Guide
T R O U B L E S H O O T I N G G U I D E T R O U B L E S H O O T I N G G U I D E T R O U B L E S H O O T I N G G U I D E T R O U B L E S H O O T I N G G U I D E T R O U B L E S H O O T I N G G U I D E... -
Page 55: Temperature Correlation For Ph Sensitive Glass
TEMPERATURE CORRELATION TEMPERATURE CORRELATION TEMPERATURE CORRELATION TEMPERATURE CORRELATION TEMPERATURE CORRELATION FOR p p p p p H SENSITIVE GLASS H SENSITIVE GLASS H SENSITIVE GLASS H SENSITIVE GLASS H SENSITIVE GLASS The resistance of glass electrodes partially depends on the temperature. The lower the temperature, the higher the resistance. -
Page 56: Accessories
A C C E S S O R I E S A C C E S S O R I E S A C C E S S O R I E S A C C E S S O R I E S A C C E S S O R I E S pH BUFFER SOLUTIONS HI 70004P pH 4.01 Buffer Sachets, 20 mL, 25 pcs... - Page 57 ORP PRETREATMENT SOLUTIONS HI 7091L Reducing Pretreatment Solution, 500 mL HI 7092L Oxidizing Pretreatment Solution, 500 mL CONDUCTIVITY SOLUTIONS HI 70030P 12880 S/cm ( mho/cm), 20 mL sachets (25 pcs.) μ μ HI 70031P 1413 S/cm ( mho/cm), 20 mL sachets (25 pcs.) μ...
- Page 58 HI 70442M* 1500 ppm (mg/L), 250 mL HI 70442L* 1500 ppm (mg/L), 500 mL * 1500 ppm TDS have an approximate conversion factor of: 0.65 ppm = 1 S/cm conversion rate. μ pH ELECTRODES All electrodes part numbers ending in B are supplied with a BNC connector and 1 m (3.3') cable, as shown below : HI 1043B Glass-body, double junction, refillable, combination pH electrode.
- Page 59 HI 1330B Glass-body, semimicro, single junction, refillable, combination pH electrode. Use: laboratory, vials. HI 1331B Glass-body, semimicro, single junction, refillable, combination pH electrode. Use: flasks. HI 1230B Plastic-body (PES), double junction, gel-filled, combination pH electrode. Use: general, field. HI 2031B Glass-body, semimicro, conic, refillable, combination pH electrode.
- Page 60 FC 100B Plastic-body (PVDF), double junction, refillable, combination pH electrode. Use: general purpose for food industry. FC 200B Plastic-body (PVDF), open junction, conic, Viscolene, non-refillable, combination pH electrode. Use: meat & cheese. FC 210B Glass-body, double junction, conic, Viscolene, non-refillable, combination pH electrode.
- Page 61 HI 1413B Glass-body, single junction, flat tip, Viscolene, non-refillable, combination pH electrode. Use: surface measurement. ORP ELECTRODES HI 3131B Glass-body, refillable, combination platinum ORP electrode. Use: titration. HI 3230B Plastic-body (PES), gel-filled, combination platinum ORP electrode. Use: general purpose. HI 4430B Plastic-body (PES), gel-filled, combination gold ORP electrode.
- Page 62 EXTENSION CABLE FOR SCREW-TYPE ELECTRODES (SCREW TO BNC ADAPTER) HI 7855/1 Extension cable 1 m (3.3') long HI 7855/3 Extension cable 3 m (9.9') long HI 7855 SERIES CABLE CONNECTORS CONNECTOR AND 3.0 mm (0.12") CABLE WITH BNC CONNECT TO CONNECT TO THE BNC SOCKET SCREW TYPE...
- Page 63 To avoid electrical shock, do not use this instrument when voltages at the measurement surface exceed 24 VAC or 60 VDC. To avoid damage or burns, do not perform any measurement in microwave ovens. Hanna Instruments reserves the right to modify the design, construction and appearance of its products without advance notice.
- Page 64 Thank you for reading this data sheet. For pricing or for further information, please contact us at our UK Office, using the details below. UK Office Keison Products, P.O. Box 2124, Chelmsford, Essex, CM1 3UP, England. Tel: +44 (0)330 088 0560 Fax: +44 (0)1245 808399 Email: sales@keison.co.uk...